Before we get started, if you haven't yet completed our Interactive Tutorial or still don't feel comfortable with SQL, please complete that before continuing. The following deep-dive topics will be building on the foundation from the lessons in the tutorial by exploring more advanced SQL ...
About the lessons Since most users will be learning SQL to interact with an existing database, the lessons begin by introducing you to the various parts of an SQL query. The later lessons will then show you how to alter a table (or schema) and create new tables from scratch. Each lesson...
SQL - SQLbolt .com HTML - w3schools .com API - rapidapi .com/learn CSS - web .dev/learn/css Python - learnpython .org React - react-tutorial .app JavaScript - javascript .info Git and Github...
Before we get started, if you haven't yet completed our Interactive Tutorial or still don't feel comfortable with SQL, please complete that before continuing. The following deep-dive topics will be building on the foundation from the lessons in the tutorial by exploring more advanced SQL ...
SQL, or Structured Query Language, is a language designed to allow both technical and non-technical users to query, manipulate, and transform data from a relational database. And due to its simplicity, SQL databases provide safe and scalable storage for millions of websites and mobile application...
ALTERTABLEmytableDROPcolumn_to_be_deleted; Renaming the table If you need to rename the table itself, you can also do that using theRENAME TOclause of the statement. Altering table name ALTERTABLEmytableRENAMETOnew_table_name; Other changes ...
SQLBolt Learn SQL with simple, interactive exercises. Interactive Tutorial More Topics SQL Lesson 7: OUTER JOINs Depending on how you want to analyze the data, the INNER JOIN we used last lesson might not be sufficient because the resulting table only contains data that belongs in both of the...
You've finished the tutorial! We hope the lessons have given you a bit more experience with SQL and a bit more confidence to use SQL with your own data. We've just brushed the surface of what SQL is capable of, so to get a better idea of how SQL can be used in the real world,...
Interactive Tutorial More Topics SQL Lesson 13: Inserting rows We've spent quite a few lessons on how to query for data in a database, so it's time to start learning a bit about SQL schemas and how to add new data. What is a Schema? We previously described a table in a database ...
Interactive Tutorial More Topics SQL Lesson 16: Creating tables When you have new entities and relationships to store in your database, you can create a new database table using the CREATE TABLE statement. Create table statement w/ optional table constraint and default value CREATE TABLE IF NOT...